| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [was/were] [v-ing] | 6052 |
|
| 2 | [was/were] [v-ing] at | 2698 |
|
| 3 | they [was/were] at | 257 |
|
| 4 | they [v-ing] at | 12 |
|
